For $1000 install, it does not sound like an IFR installation???

I already had a King KCS-55A HSI installed, so I didn't need an indicator.

I also wrote my own POH supplement(boiler plate from Garmin) and did the
required flight testing(virtually nothing these days.)

All my avionics guy did was remove a KX155 and wire in a GNS430. My avionics
guy is a jewel(great with FAA approvals) and doesn't seem to mind installing
junk I buy off eBay. But then, I've done him a few favors as well.

What most people don't realize is that the Sandel is only an indicator. You
still need all the compass system parts from King, Collins, or others.

Karl